The postscript murders

The death of a ninety-year-old woman with a heart condition should absolutely not be suspicious. DS Harbinder Kaur certainly sees nothing to concern her in carer Natalka's account of Peggy Smith's death. But when Natalka reveals that Peggy lied about her heart condition and that she had been sure someone was following her, DS Harbinder Kaur thinks that maybe there is no such thing as an unsuspicious death after all.